Merge pull request #57 from oniatus/snapshotOverride

Avoid snapshots being overridden by other instances discovered later. Log discovered of repeated modules.

Author: immortius

gestalt-module/src/main/java/org/terasology/module/TableModuleRegistry.java

@@ -21,6 +21,8 @@
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import com.google.common.collect.Table;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.terasology.naming.Name;
 import org.terasology.naming.Version;
 
@@ -37,19 +39,27 @@
  */
 public class TableModuleRegistry implements ModuleRegistry {
 
+    private static final Logger logger = LoggerFactory.getLogger(TableModuleRegistry.class);
+
     private final Table<Name, Version, Module> modules = HashBasedTable.create();
     private final Map<Name, Module> latestModules = Maps.newHashMap();
 
     @Override
     public boolean add(Module module) {
         Preconditions.checkNotNull(module);
-        if (!modules.contains(module.getId(), module.getVersion()) || modules.get(module.getId(), module.getVersion()).getVersion().isSnapshot()) {
+        if (!modules.contains(module.getId(), module.getVersion())) {
             modules.put(module.getId(), module.getVersion(), module);
             Module previousLatest = latestModules.get(module.getId());
             if (previousLatest == null || previousLatest.getVersion().compareTo(module.getVersion()) <= 0) {
                 latestModules.put(module.getId(), module);
             }
             return true;
+        } else {
+            logger.error("Module {}-{} already registered from {}, cannot register same module from {}",
+                    module.getId(),
+                    module.getVersion(),
+                    modules.get(module.getId(), module.getVersion()).getLocations(),
+                    module.getLocations());
         }
         return false;
     }